Reference echograms in time and distance coordinates. Pmax is the amplitude of the scanning pressure wave reflected from the first characteristic point; Р is the current pressure in the flowline; t is the time interval; L is the flowline length; N0… N5 are the characteristic points of the pipeline

  Part of: Emets SV, Kudayarov VN, Prakhova MYu (2018) Method for the monitoring of hydrate formation process in intrafield flowlines. Arctic Environmental Research 18(3): 106-114.